3371. The unit speed of the turbine runner is
✅ The correct answer is option A.
Mechanical Engineering
Prepare with the best Mechanical Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers core topics such as engineering mechanics, thermodynamics, strength of materials, theory of machines, fluid mechanics, heat transfer, manufacturing processes, machine design, and power plant engineering. These Mechanical Engineering multiple-choice questions are designed for students, fresh graduates, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving ability with our updated and comprehensive Mechanical Engineering MCQs.
3372. For 450 m head of water, __________ shallbeused.
Pelton wheel
Kaplan turbine
Francis turbine
none of these
✅ The correct answer is option A.
3373. According to Euler’s column theory, the crippling load of a column is given by p = π2 EI/Cl2 In this equation, the value of C for a column with both ends hinged, is
1-Apr
1-Feb
1
2
✅ The correct answer is option C.
3374. In a petrol engine, if diesel is used, then the engine will
not run
run more efficiently
run at high speed
explode
✅ The correct answer is option A.
3375. A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm2. If the permissible tensile stress in the metal is 20 N/mm2, then the thickness of the metal required for making the pipe will be
5 mm
10 mm
15 mm
25 mm
✅ The correct answer is option D.
3376. The mechanical draught __________ with the amount of smoke.
increases
decreases
does not effect
✅ The correct answer is option B.
3377. The refrigerant supplied to a compressor must be
superheated vapour refrigerant
dry saturated liquid refrigerant
a mixture of liquid and vapour refrigerant
none of these
✅ The correct answer is option A.
3378. A non-reversible machine is also called a self-locking machine.
Agree
Disagree
✅ The correct answer is option A.
3379. The conditions of temperature and pressure at 0°C (273K) and 760 mm of Hg pressure are termed as __________ temperature and pressure.
normal
standard
✅ The correct answer is option B.
3380. The function of a valve rod is
to provide reciprocating motion to the slide valve
to convert reciprocating motion of the piston into rotary motion of the crank
to convert rotary motion of the crankshaft into to and fro motion of the valve rod
to provide simple harm
✅ The correct answer is option D.